Sec. 87.137  Types of emission.

    (a) The assignable emissions, corresponding emission designators and 
authorized bandwidths are as follows:

                                                                                                
                
------------------------------------------------------------------------------------------------
----------------
                                                                               Authorized bandwi
dth (kilohertz) 
                                                                            --------------------
----------------
             Class of emission                     Emission designator         Below 50     Abov
e 50   Frequency
                                                                                 MHz          MH
z      deviation
------------------------------------------------------------------------------------------------
----------------
A1A \1\....................................  100HA1A                               0.25         
                
A1N........................................  300HA1N                                            
0.75            
A2A........................................  2K04A2A                               2.74        5
0               
A2D........................................  6K0A2D                                            5
0               
A2D \5\....................................  13K0A2D                         ...........       5
0      .........
A3E \2\....................................  6K00A3E                                       \3\ 5
0               
A3E........................................  3K20A3E \15\                                 \15\ 2
5               
A3X \4\....................................  3K20A3X                                           2
5               
A9W \5\....................................  13K0A9W                                           2
5               
F1B \1\....................................  1K70F1B                               1.7          
                
F1B \1\....................................  2K40F1B                               2.5          
                
F2D........................................  5M0F2D                                         (\9\
)               
F3E \6\....................................  16K0F3E                                           2
0             5 
F3E \7\....................................  36K0F3E                                           4
0            15 
F7D \8\....................................  5M0F7D                                         (\9\
)               
F9D........................................  5M0F9D                                         (\9\
)               
G1D........................................  16K0G1D                                        20kH
z               
G1D \16\...................................  21K0G1D                                           2
5               
G1E \16\...................................  21K0G1E                                           2
5               
G1W \16\...................................  21K0G1W                                           2
5               
G3E \6\....................................  16K0G3E                                           2
0             5 
H2B \10\ \11\..............................  2K80H2B                               3.0          
                
H3E \11\ \12\..............................  2K80H3E                               3.0          
                
J2A \1\....................................  100HJ2A                               0.25         
                
J2B \1\....................................  1K70J2B                               1.7          
                
                                             2K40J2B                               2.5          
                
J3E \11\ \12\..............................  2K80J3E                               3.0          
                
J7B \11\...................................  2K80J7B                               3.0          
                
J7D........................................  5M0J7D                                         (\9\
)               
J9W \11\...................................  2K80J9W                               3.0          
                
M1A........................................  620HM1A                                            
                
NON........................................  NON                                          None \
15\             
PON \13\...................................  (\9\)                                          (\9\
)               
R3E \11\ \12\..............................  2K80R3E                               3.0          
                
XXA \14\...................................  1K12XXA                               2.74         
                
------------------------------------------------------------------------------------------------
----------------
Notes:                                                                                          
                
\1\ A1A, F1B, J2A and J2B are permitted provided they do not cause harmful interference to H2B, 
J3E, J7B and    
  J9W.                                                                                          
                
\2\ For use with an authorized bandwidth of 8.0 kilohertz at radiobeacon stations. A3E will not 
be authorized:  
(i) At existing radiobeacon stations that are not authorized to use A3 and at new radiobeacon st
ations unless   
  specifically recommended by the FAA for safety purposes.                                      
                
(ii) At existing radiobeacon stations currently authorized to use A3, subsequent to January 1, 1
990, unless     
  specifically recommended by the FAA for safety purposes.                                      
                
\3\ In the band 117.975-136 MHz, the authorized bandwidth is 25 kHz for transmitters type accept
ed after January
  1, 1974.                                                                                      
                

[[Page 203]]

                                                                                                
                
\4\ Applicable only to Survival Craft Stations and to the emergency locator transmitters and eme
rgency locator  
  transmitter test stations employing modulation in accordance with that specified in Sec.  87.1
41 of the Rules.
  The specified bandwidth and modulation requirements shall apply to emergency locator transmitt
ers for which   
  type acceptance is granted after October 21, 1973.                                            
                
\5\ This emission may be authorized for audio frequency shift keying and phase shift keying for 
digital data    
  links on any frequency listed in Sec.  87.263(a)(1), Sec.  87.263(a)(3) or Sec.  87.263(a)(5).
 13K0A2D        
  emission may be authorized on frequencies not used for voice communications. If the channel is
 used for voice 
  communications, 13K0A9W emission may be authorized, provided the data is multiplexed on the vo
ice carrier     
  without derogating voice communications.                                                      
                
\6\ Applicable to operational fixed stations in the bands 72.0-73.0 MHz and 75.4-76.0 MHz and to
 CAP stations   
  using F3 on 143.900 MHz and 148.150 MHz.                                                      
                
\7\ Applicable to operational fixed stations presently authorized in the band 73.0-74.6 MHz.    
                
\8\ The authorized bandwidth is equal to the necessary bandwidth for frequency or digitally modu
lated           
  transmitters used in aeronautical telemetering and associated aeronautical telemetry or teleco
mmand stations  
  operating in the 1435-1535 MHz and 2310-2390 MHz bands. The necessary bandwidth must be comput
ed in accordance
  with part 2 of this chapter.                                                                  
                
\9\ To be specified on license.                                                                 
                
\10\ H2B must be used by stations employing digital selective calling.                          
                
\11\ For A1A, F1B and single sideband emissions, except H2B, the assigned frequency must be 1400
 Hz above the   
  carrier frequency.                                                                            
                
\12\ R3E, H3E, and J3E will be authorized only below 25000 kHz. Only H2B, J3E, J7B, and J9W are 
authorized,     
  except that A3E and H3E may be used only on 3023 kHz and 5680 kHz for search and rescue operat
ions.           
\13\ The letters ``K, L, M, Q, V, W, and X'' may also be used in place of the letter ``P'' for p
ulsed radars.   
\14\ Authorized for use at radiobeacon stations.                                                
                
\15\ Applicable only to transmitters of survival craft stations, emergency locator transmitter s
tations and     
  emergency locator transmitter test stations type accepted after October 21, 1973.             
                
\16\ Authorized for use by aircraft earth stations. Lower values of necessary and authorized ban
dwidth are      
  permitted.                                                                                    
                

    (b) For other emissions, an applicant must determine the emission 
designator by using part 2 of this chapter.
    (c) A license to use radiotelephony includes the use of tone signals 
or signaling devices whose sole function is to establish or maintain 
voice communications.
    (d) Emissions other than, or bandwidths in excess of, those listed 
in paragraph (b) of this section, will be authorized only upon a 
satisfactory showing of need. An application requesting this special 
license must fully describe the emission desired and the required 
bandwidth, and must state the purpose of the proposed operation.
[ 53 FR 28940 , Aug. 1, 1988, as amended at  55 FR 7333 , Mar. 1, 1990;  55 FR 13535 , Apr. 11, 1990;  55 FR 28627 , July 12, 1990;  56 FR 11518 , Mar. 
19, 1991;  57 FR 45749 , Oct. 5, 1992;  58 FR 30127 , May 26, 1993]